Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N925NK - Airbus A320 271NSL - Spirit Airlines NKS105/NK105, Cancun (CUN) to Chicago O'Hare (ORD) - 4.1 mi away @ 34750 ft, heading NNE at 544 mph. Spotted 5x before! [01:48:22 PM CST] #ACD1F3 #N925NK #A20N #SPIRIT_WINGS #NKS105 #NK105 #ADSB #ADSBbot